55. In a storm of 210 minutes duration, the incremental rainfall at various time interval is given below. Time since start of the storm (m) Incremental rainfall in the time interval (cm) What is the average intensity of the storm over the duration of the storm? 30 60 90 120 150 180 210 0.75 2.25 6.00 4.50 2.50 1.50 0.75

55. In a storm of 210 minutes duration, the incremental rainfall at various time interval is given below. Time since start of the storm (m) Incremental rainfall in the time interval (cm) What is the average intensity of the storm over the duration of the storm? 30 60 90 120 150 180 210 0.75 2.25 6.00 4.50 2.50 1.50 0.75

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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The ordinates of a six-hour unit hydrograph for a catchment area of 1000 km are given below. Time (hr.) UH Ordinates (m'/s-em) 12 200 18 30 36 15 6 24 42 80 146 80 50 The storm lasted for 18 hours. The effective rainfall increments (rainfall excess) for six-hour periods are 0.6 cm. 2 cm, and 1 cm respectively. Compute the runoff hydrograph. Also find out the peak flow and the volume of runoff.
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